Casting apparatus



Aug. 27, 1940. A, H JUNG CASTING APPARATUS Filed April 29, 1939 Patented` Aug. 27, 1940 oFFIcE f CASTING APPARATUS- A Albert H.' Jung, Flushing, N.l Y., assigner to United American Metals- Corporation, Brooklyn, N. Y., a corporation vof New York Application April Y29,. 1939, serial No 270,808

solaims. (C1. zzz- 79) ing of the metal chute I2 about the inner end .This invention relates to castingl and "more particularly to the delivery of molten metal from a furnace into a multiple mold.

l Prior to the instantI invention it has been ""lcustomary' to associate a metal pouring spout' A orphute in either xed or pivotal relation to a "i Adischarge opening in a metal melting furnace in order that the outerend ofthe chute may be l, lowered when the mold is in place and ready to 0'be filled, and the discharge end raised above the discharge opening when the mold is full and it is desired that the flow of molten metal be discontinued. While such prior constructions effect flow and discontinuance of flow of molten 15 metal when desired, yet the continuous use of such devices has been wasteful of metal by reason of excessive formation of dross which occurs whilefthe chute is being raised and lowered ,with the surface of molten metal therein exposed to 20 the air. l, y

It is an object of the instantL invention to provide a swingable molten metal chute in association with thedis'charge of a furnace capable of being swung in the same Ihorizontal plane, whereby the formation of dross is minimized.

It is a `further object of the instantI invention to provide a swingable metal chute` in association with a moltenmetal furnace incorporating combined means for controlling the swingf Jing of the chute andthe now of molten metal therethrough, whereby the filling cfa plurality of molds may be effected by the control ofthe device with but a single hand of the operator.

Other objects and the nature and advantages -of the invention will be apparent from the -fol lowing description taken in conjunction with the accompanying drawing, ,Wherein Fig. 1v is a view in perspective illustrating'a swingable pouring spout in accordance with the invention; l f

Fig. 2 is a sectional view taken along line 2--2 of Fig, 1 and docking in the direction of. the arrows; and,

Fig. 3 is afragmentarylongitudinal sectional# l5. view illustrating a modif-led form of Agate.

Referring to the drawing va metal melting furnace I0 is provided with a discharge opening II. Immediately below the furnace discharge fopening II and in pivotal relation with the furnace ;0v I0 is a swingable chute I2 arranged to be swung in a `generally horizontal plane whereby the individual molds I3 may kbe'successively lled from the lowermost discharge end -Il of the molten metal chute I2.` 'I'he pivot joint I5 is iig-secured to the outer wall of the furnace III and the under side of the molten metal chute- I2, but any other arrangement or connection associated with the chute I2 or the furnace II) or both'inay be substituted for the construction illustrated in '.0 order to effect the generally horizontal swingthereof which is adjacent to the discharge opening I I in the furnace I0.

The furnace Il) forms no part of the 'instant invention and may 'generally comprise a melting y pot and heating means of any type such as a gas chute I2 and located closer to the discharge end gate II. 'I'he pivot pins 2l secure the gate I1 cavity I3 of the mold I6 and the filling of the burner, a coal burner,V or electrical resistance element. The metal discharged flows through the opening I I and passes into the enlarged inner end of the chute I2 which is of generally U- shaped section, from whence it flows to the relatively small discharge end I4 and into the'individual mold cavity I3 of the multiple mold I6.

Arranged in associationw'lth the walls of the 15 than to the receiving end 'thereof is a pivotably mounted .gate I'l comprising a generally flat element shaped along the bottom and side edges to correspond to the U-shaped section of the cavity of the chute I2. A'U-shaped frame member I8 engages the outer wall of the chute I2 and is secured thereto by bolts I9. "The arms 20 of the U-shapedframe' member I8 extend above the sides of the chute I2 to form a support for the in pivotal relation to thearms 20.0f the frame member I8 whereby the gate I1 may be swung into open and closed position to effect flow of molten metal .or discontinue such ow. In order to provide a neat fit between the lower portion ofthe gate I'I and the inner walls of the chute I2 a band 22 may be associated with the lower portion of the gate II which may be ground 'to give the required contour corresponding to the cavity of the chute I2. A

With the furnace I0 in operation and the multiple mold I6 arranged beneath the open discharge end I4 of' the swingable chute I2, the operator may move the chute I2 by corresponding movement of th'e handle 23 which is se`` cured to the side wall of the chute I2 by the angularly bent rod- 24, until thedischarge end I4 is immediately abovey an individual mold` individual mold. cavity I3 will be effected withoutV further -attention 'of -the operator.i When the individual mold cavity I3 is. full, the operator pulls the trigger element 25 which is'associated with the upper portion of the gate I1 Y bythe chain 26 to-eifect closing of the gate I1 50 which is normally held open bythe tension springs 21 also secured to the upper endof the of the tension springs\2'| are secured to the lowerends of inverted. -J-shaped spring holders, 28

gate I1 at the sideoe thel same. The other end which are secured at their upper ends in mating engagement with the side walls of the chute- 1 movement of the chute I2 until the discharge end I 4 of the gate I1 is directly above a successive mold cavity I3 which is ready to be lled.

The operator then releases the trigger 25 and the tension spring 2l edects the partial rotation of the gate I1 about the pivot pins 2| to open the chute I2 which passes molten metal from the furnace I0 through the discharge opening II into the chute I2 to its discharge end I4 from whence the second mold cavity receives metal until the operator again pulls the trigger 25 to again close th'e chute I2 to further flow. This process is repeated until all of the individual cavities in the multiple mold are lled, whereupon a second multiple mold I6 may be placed in position beneath the swingable chute I2. Not only is it contemplated that multiple molds I6 be utilized in connection with the swingable chute I2 but it is to be understood that it is within the scope of the invention to utilize the device in association withV molds arranged on a continuous conveyer.

With the construction above described no vertical swinging of the chute is contemplated for the control of ow of molten metal is affected by the gate I'I whereby the exposed surface of the molten metal flowing in the chute I2 will have a minimum of formation of dross 'thereon and further the operator will be called upon to expend but little energy in the filling of many molds.

The formation of dross due to oxidation of the metal on its surface is encouraged by motion of.

thevmetal through vertical space and'this formation is quite an item of expense in the handling of molten metal and savings due to the elimination of the formation thereof are appreciable. Devices in accordance with the instant inven- `tion not only inhibit the formation of dross by l in the appended claims.

What is claimed is:

1. A molten metal distribution chute of generally U-shaped section larger at its molten metal receiving end and smaller at its molten metal discharge end, a pivotal connection directly connected to said chute at its metal receiving end,

said `pivotable connection having a vertical axis whereby the discharge end may be swung in a generally horizontal plane thereabout, the molten metal receiving end of said chute located adjacent to the discharge end of a molten metal source, means for generally horizontally swinging the discharge end of said chute to successive positions adjacent a series of individual molds cavities, a gate pivotably mounted within said chute and engaging the inner walls thereof in its closed position to effect flow of. molten metal therethrough, spring means normally under tension connected to the upper portion of said gate, acting to hold lsaid gate in its open position whereby the flow of molten metal through said chute is permitted, a generally U-shaped frame member corresponding to the exterior of the chute but having side legs longer than the height of the walls of the chute to provide for the said pivotable arrangement of the gate, pivot pins engaging said side legs and said gate in pivotable relation, trigger operated means engaging said gate at a location above the plane of said pivot pins and said means for swingably moving said chute, said trigger operating means comprising a trigger located adjacent to said means for swingably moving said chute, whereby an operator may move said chute and control said gate With a single hand and whereby the operator may effect control of the flow of molten metal from said source and fill successive mold cavities Without vertical movement of said chute.

2. The structure recited in claim 1, and inverted J-shaped means secured to the upper ends of .the side walls of said chute and its opposite ends to the spring means which is associated with the said gate. y

3. The combination of a furnace, means forming a molten metal discharge opening, a distribution chute open at its top adjacent and below said discharge opening means at one end of said chute, said distribution chute being substantially vertically pivoted for substantially horizontal movement about that end which is associated with said furnace, a gate mounted in said chute, means for operating said gate, means connected to said chute for effecting movement thereof in a substantially horizontal plane, said gate operating means and said chute moving means being located within a handspan of each other whereby both said gate and said moving means may be operated with a single hand.

`4. The combination of a furnace, means formmeans for operating said gate, means connected:l

to said chute for eifecting movement thereof in a substantially horizontal plane, spring means normally urging said gate to its open position,

said gate operating means including an element actuable to overcome the action of said spring -and effect the closing of said gate, said gate operating means and said chute moving means being located within a handspan of each other. 5. The combination of a furnace, means forming a molten metal discharge opening, a distribution chute open at its top adjacent and below said discharge opening means at one end of said chute, said distribution chute being substantially vertically pivoted for substantially horizontal movement about that end which is associated with said furnace, agate mounted in said chute, means for operating said gate, means connected to said chute for effecting movement thereof in ing a molten metal discharge opening, a distrif 

